| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5466 |
18.3%
|
| 2 | Studying, training | 154 |
0.5%
|
| 3 | housekeeping | 327 |
1.1%
|
| 4 | Old, ill | 119 |
0.4%
|
| 5 | Others | 66 |
0.2%
|
| Sysmiss | 23783 |